tree ad7415eb2a50beffa282a63ed3d2f4bb11e2685e
parent 936a7fc6f9030b3091578c924097bf36e3dc8d5c
author Ben Kwa <kenobi@google.com> 1450323728 -0800
committer Ben Kwa <kenobi@google.com> 1450479866 -0800

Implement bucketed sorting in DocumentsUI.

Change the sort code in the Model to bucket items into two separate
categories (folders and documents) and then sort the two buckets
separately.

Add code to the adapter to insert a visual break in the UI, between
folders and documents.

Change-Id: I759fedcef829aba9ad61554326489a9e62641cc7